Client Viola Sanon has her finger pricked for a blood sugar test in the Family Van in Boston, Massachusetts, August 9, 2010. Every week, dozens of residents of this low-income Boston neighborhood stop into the Family Van, an RV manned by healthcare workers affiliated with Harvard Medical School who perform simple, free screenings, including blood pressure, body mass index and blood sugar, which can alert patients if they face an elevated risk for diabetes, hypertension or other chronic conditions. REUTERS/Brian Snyder (UNITED STATES - Tags: HEALTH SOCIETY)